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Old 16th January 2009, 05:37 AM   #1
gilwe is offline gilwe  United States
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Default WTB: STK043 stereo amplifier chip

I'd love to buy if any of you have a spare one...

This is for fixing a Fisher RC-1022 receiver. Thanks !

(email me: gil_we at yahoo.com)
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Old 16th January 2009, 08:55 AM   #2
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Default available

in athens greece
for the astronomical figure of 36 euros each ( !!!!!! )

no web page you have to call the company +302108621500
mr panagiotis

they probably ship them anywere

they have also 5 pcs available
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Old 17th January 2009, 10:33 AM   #3
gilwe is offline gilwe  United States
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Thanks !

I've seem them going from as low as 13$,
but no shipping to the location where I'm at...
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Old 17th January 2009, 12:44 PM   #4
jaycee is offline jaycee  United Kingdom
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The price of them is astronomical!

Personally, I'd see about retrofitting some small amp circuit in there. Something with TIP142/147 darlingtons for example.

There might also be other kinds of STK that you can use that are pin compatible, more readily available and cheaper.
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Old 17th January 2009, 01:18 PM   #5
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Default i agree too

Quote:
Originally posted by jaycee
The price of them is astronomical!

Personally, I'd see about retrofitting some small amp circuit in there. Something with TIP142/147 darlingtons for example.

There might also be other kinds of STK that you can use that are pin compatible, more readily available and cheaper.

the price for a thing like that is very expensive ( on the other hand i dont like stk sound any way)
..... depainting on the rail voltage i would be very happy to locate inside a couple of very happily P3A borads ....

you may wana check this on esp pages .....
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Old 17th January 2009, 01:42 PM   #6
jaycee is offline jaycee  United Kingdom
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Actually now I come to think about it, what I would do is retrofit some LM3886s into it. They are small compared to the STK and you could probably do a point-to-point wiring if you don't feel like doing a small PCB.

Also, they will sound better - the STK-043 datasheet says 20W output power into an 8 ohm load at 1KHz has a THD of 0.4%! The LM3886 is far superior in this regard.
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Old 18th January 2009, 07:39 AM   #7
djk is offline djk
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The STK043 is a dual power amplifier.

http://audiolabga.com/pdf/STK040.pdf

You could try a LM4780, or hack it up for two LM3886.

http://www.national.com/mpf/LM/LM4780.html
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Old 18th January 2009, 07:44 AM   #8
jaycee is offline jaycee  United Kingdom
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Yeah I meant to say 2xLM3886. You'd easily fit 2 LM3886 chips in the same place as the STK, as theyre quite big. LM4780 would work too but the pin spacing is a bit of a pain.
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